NEW YORK ( TheStreet) - Netflix's ( NFLX) next threat could come from the founders of Skype. According to GigaOM, Niklas Zennstrom and Janus Friis are preparing to launch Vdio, a site similar to their music subscription site, Rdio. Rdio provides free content, similar to Pandora, sans ads. Vdio may launch in the U.K. first, GigaOM reported. -Reported by Jeanine Poggi in New York. Follow TheStreet.com on Twitter and become a fan on Facebook.